Philadria d.o.o. - catalog 19th auction - April 2018
,P 16, 18, Av. 269, P 78, 84,Cover franked with 40 hel. sent from Vienna (16.VI.21) to Maribor where 60 para postage due was charged (18.VI.21). The adressee didn't collect the letter. Returned to Vienna, where 1,20 K. postage due was charged; signed Kajtna.